[sudharma]

Originally Posted by Forged_Piston

here are a few more..
....

1) Man overboard
2) I understand
3) Reading between the lines
4) Cross roads
5) Tri-cycle
6) 2 degrees below "0"
7) Neon Light?
8) 6 feet under ground
9) He's all by himself
10) Backward Glance
11) Life after death
12) (Missed this one)
13) (Missed this also)

[straightdrive]

Originally Posted by Forged_Piston

here are a few more..

...12. THINK...

Thinkin' (Think in) Cap?

[prateekm]

Guys, a simple question.

What is 6 ÷ 2 (1+2) = ?

I am getting the answer as 9, but some people are arguing that it should be 1. What's your answer?

[kaushik_s]

Saw this thread after a long time,
12 is Think Big
Answer to 13 (oh I love this one) -> Long time no C

At Prateek, you can either of 9 or 1 depending on how you are prioritizing the operations. If I'm not wrong, mathematically brackets and additions will have higher priority for operation if I'm not wrong. So in that case it should be 1. 6/2(1+2) = 6/2x3 = 6/6 = 1

[prateekm]

What I think is,

in 6 ÷ 2 (1+2), it's 6/2 * (1+2) = 9

If the answer should have been 1, then it should have been 6 ÷ [2(1+2)] = 1.

In PEDMAS, doesn't divison have higher priority than multiplication?

There is a big discussion about this on Facebook: http://www.facebook.com/home.php?sk=...538&qa_ref=qts

[deep_bang]

The rule i learnt in school was BODMAS - probably the same as PEDMAS.. . Yes - division does have higher priority than multiplication.
So, the answer should be 6, but i guess it just depends on who all use the BODMAS/PEDMAS rule..

[anku94]

Originally Posted by kaushik_s

12 is Think Big
Answer to 13 (oh I love this one) -> Long time no C

You beat me to it. Grr...

Rebus are my fav type of puzzles. Here's another.

-----------------------------
1:30 IST
2:30 IST
3:30 IST
4:30 IST
-----------------------------

(The dashed lines are not a part of the question.)

[mentos]

Four Times ?
.................................................. ..

Originally Posted by anku94

1:30 IST
2:30 IST
3:30 IST
4:30 IST

[anku94]

No. I have to admit, it's pretty hard to get this one, but looks ridiculously simple when you read it.

I'll post the answer today evening, if no one else gets it.

[sachinj12]

Originally Posted by prateekm

Guys, a simple question.

What is 6 ÷ 2 (1+2) = ?

I am getting the answer as 9, but some people are arguing that it should be 1. What's your answer?

Its 1. Do the brackets first, multiply by 2. Then the division. So, (1+2)=3. 3*2=6 and 6/6=1.

[pnredkar]

Originally Posted by prateekm

What is 6 ÷ 2 (1+2) = ?

Lets get rid of the brackets, then the expression is "6 ÷ 2 * 3". And according to my knowledge and Wikipedia, division and multiplication are equal precedence. They should be performed in the order in which they appear. So, the expression is "(6 ÷ 2) * 3", which is 9.

[anku94]

Originally Posted by anku94

You beat me to it. Grr...

Rebus are my fav type of puzzles. Here's another.

-----------------------------
1:30 IST
2:30 IST
3:30 IST
4:30 IST
-----------------------------

(The dashed lines are not a part of the question.)

The answer is The Times Of India.

[shamik.bose]

Found these two puzzles while aimlessly surfing. The first one is a proper math problem, while the second one is more of a riddle:

1. Pairs of primes separated by a single number are called prime pairs. Examples are 17 and 19, 41 and 43 etc.. Prove that the number between a prime pair is always divisible by 6

2. A dragon and knight live on an island. This island has seven poisoned wells, numbered 1 to 7. If you drink from a well, you can only save yourself by drinking from a higher numbered well. Well 7 is located at the top of a high mountain, so only the dragon can reach it.

One day they decide that the island isn't big enough for the two of them, and they have a duel. Each of them brings a glass of water to the duel, they exchange glasses, and drink. After the duel, the knight lives and the dragon dies.

Why did the knight live? Why did the dragon die?

[21Archer84]

Originally Posted by shamik.bose

1. Pairs of primes separated by a single number are called prime pairs. Examples are 17 and 19, 41 and 43 etc.. Prove that the number between a prime pair is always divisible by 6

2. A dragon and knight live on an island. This island has seven poisoned wells, numbered 1 to 7. If you drink from a well, you can only save yourself by drinking from a higher numbered well. Well 7 is located at the top of a high mountain, so only the dragon can reach it.

One day they decide that the island isn't big enough for the two of them, and they have a duel. Each of them brings a glass of water to the duel, they exchange glasses, and drink. After the duel, the knight lives and the dragon dies.

Why did the knight live? Why did the dragon die?

1. Not sure of Mathematical proof's but yes all the numbers between the Prime pairs are divisible by 6 except for the pair (3,5).

2. The Knight survives as he drinks water from the Well 7 brought by the Dragon and the Dragon dies as it could have water only from Well 6 and not beyond.

[sidkun]

Originally Posted by shamik.bose

Found these two puzzles while aimlessly surfing. The first one is a proper math problem, while the second one is more of a riddle:

1. Pairs of primes separated by a single number are called prime pairs. Examples are 17 and 19, 41 and 43 etc.. Prove that the number between a prime pair is always divisible by 6

Since any group of 2 or more consecutive numbers must have at least one even number, the number between a prime pair has to be divisible by 2 since it is even. Also, at least 1 number in a group of 3 has to be divisible by 3, and since the other 2 are prime, it has to be the one in the middle of the prime pair. Ergo, it is divisible by 6 (being divisible by both factors of 6)

Originally Posted by shamik.bose

2. A dragon and knight live on an island. This island has seven poisoned wells, numbered 1 to 7. If you drink from a well, you can only save yourself by drinking from a higher numbered well. Well 7 is located at the top of a high mountain, so only the dragon can reach it.

One day they decide that the island isn't big enough for the two of them, and they have a duel. Each of them brings a glass of water to the duel, they exchange glasses, and drink. After the duel, the knight lives and the dragon dies.

Why did the knight live? Why did the dragon die?

I thought about this and came up with some possible answers, but didn't arrive at an answer that is foolproof, i.e. one that would work 100% (with no possibility of any other option) assuming both the dragon and knight are perfectly rational and selfish beings. I then looked up the net to see if there were any such solutions, but looking at the supposedly correct solutions online as well, I didn't see any solutions that would not leave things to chance. The conjecture in the puzzle seems to have left some statements unspecified, and all the solutions assume some conditions over and above what is stated in the puzzle. I'm not sure it is correct to assume those conditions as de facto.

If anyone knows any solution that is foolproof, I would appreciate if you could share it, either here or via PM.